Player Page

Cohn, A (Alexander Leopoldt)
Dob: 2016/05/17 (U10)
Gender: Male
Chess SA id: 1160159458
FIDE id:
Region: Sedibeng (GSV)
Citizen: RSA
Title(s):
Last active: 2024/10/04 (51 days ago)
Ratings
Raw rating=Current rating, Weighted rating (WR)=Weighted average of current/new Raw rating + last 23 published Raw ratings), Weighted performance (WP)=Weighted average of last 5 tournaments
Current Raw rating1160.8
Current Weighted rating1196.8
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1196.8
Current highest rating achieved1209.2
Current floor (min rating allowed)709.2
Current K-factor36
Games played this month0
Score (S)0.0
Expected score (We)0.00
Difference (S-We)0.00
Current Raw change (no limits, including tournament time weight)0.0
Current min/max change allowed (with limits)±175.3
Current Raw change used (final)0.0
Projected new Raw rating1160.8
Projected new Weighed rating1100.9
Projected new Weighted performance994.5
Projected new final Raw rating (if new WP > new Raw)1160.8
Projected new highest rating1209.2
Projected new floor709.2
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1160.8
Projected effective change (new Official - current Official)-36.0
Raw rating=Current rating, Weighted rating (WR)=Weighted average of current/new Raw rating + last 23 published Raw ratings), Weighted performance (WP)=Weighted average of last 5 tournaments
Current Raw rating1150.7
Current Weighted rating1195.4
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1195.4
Current highest rating achieved1209.7
Current floor (min rating allowed)709.7
Current K-factor36
Games played this month0
Score (S)0.0
Expected score (We)0.00
Difference (S-We)0.00
Current Raw change (no limits, including tournament time weight)0.0
Current min/max change allowed (with limits)±177.9
Current Raw change used (final)0.0
Projected new Raw rating1150.7
Projected new Weighed rating1099.6
Projected new Weighted performance994.5
Projected new final Raw rating (if new WP > new Raw)1150.7
Projected new highest rating1209.7
Projected new floor709.7
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1150.7
Projected effective change (new Official - current Official)-44.7
s
Raw rating=Current rating, Weighted rating (WR)=Weighted average of current/new Raw rating + last 23 published Raw ratings), Weighted performance (WP)=Weighted average of last 5 tournaments
Current Raw rating1200.0
Current Weighted rating1200.0
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1200.0
Current highest rating achieved1200.0
Current floor (min rating allowed)700.0
Current K-factor36
Games played this month0
Score (S)0.0
Expected score (We)0.00
Difference (S-We)0.00
Current Raw change (no limits, including tournament time weight)0.0
Current min/max change allowed (with limits)±165.8
Current Raw change used (final)0.0
Projected new Raw rating1200.0
Projected new Weighed rating1104.0
Projected new Weighted performance
Projected new final Raw rating (if new WP > new Raw)
Projected new highest rating1200.0
Projected new floor700.0
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1200.0
Projected effective change (new Official - current Official)=0.0
Raw rating=Current rating, Weighted rating (WR)=Weighted average of current/new Raw rating + last 23 published Raw ratings), Weighted performance (WP)=Weighted average of last 5 tournaments
Current Raw rating1200.0
Current Weighted rating1200.0
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1200.0
Current highest rating achieved1200.0
Current floor (min rating allowed)700.0
Current K-factor36
Games played this month0
Score (S)0.0
Expected score (We)0.00
Difference (S-We)0.00
Current Raw change (no limits, including tournament time weight)0.0
Current min/max change allowed (with limits)±165.8
Current Raw change used (final)0.0
Projected new Raw rating1200.0
Projected new Weighed rating1104.0
Projected new Weighted performance
Projected new final Raw rating (if new WP > new Raw)
Projected new highest rating1200.0
Projected new floor700.0
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1200.0
Projected effective change (new Official - current Official)=0.0
Tournaments
Did not participate this month.
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
4 Gauteng Top Schools 2024 (U9 Open) 2024/10/04 2024/10/04 Ekurhuleni (GE) Standard 60 0.83 5 5 1.0 1209.2 1209.7 Analysis
3 Sedibeng East D7 Teams Trials 2024 (U9) 2024/08/03 2024/08/03 Sedibeng (GSV) Standard 60 0.83 6 6 3.5 1190.4 1187.4 Analysis
2 AG Visser Open 2024 (E) 2024/06/08 2024/06/08 Sedibeng (GSV) Standard 60 0.83 5 5 2.0 1199.1 1197.8 Analysis
1 Laerskool Midvaal Chess Open Section 2024 (E) 2024/02/10 2024/02/10 Sedibeng (GSV) Standard 61 0.84 5 5 2.5 1200.0 1200.0 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
4 Gauteng Top Schools 2024 (U9 Open) 2024/10/04 2024/10/04 Ekurhuleni (GE) Standard 60 0.83 5 5 1.0 1209.2 1209.7 Analysis
3 Sedibeng East D7 Teams Trials 2024 (U9) 2024/08/03 2024/08/03 Sedibeng (GSV) Standard 60 0.83 6 6 3.5 1190.4 1187.4 Analysis
2 AG Visser Open 2024 (E) 2024/06/08 2024/06/08 Sedibeng (GSV) Standard 60 0.83 5 5 2.0 1199.1 1197.8 Analysis
1 Laerskool Midvaal Chess Open Section 2024 (E) 2024/02/10 2024/02/10 Sedibeng (GSV) Standard 61 0.84 5 5 2.5 1200.0 1200.0 Analysis
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 21 8 2 11 9.0 42.9 -60.7 1205.7 1145.0
White 10 3 2 5 4.0 40.0 -85.0 1205.2 1120.2
Black 11 5 0 6 5.0 45.5 -38.6 1206.2 1167.5
Standard All 21 8 2 11 9.0 42.9 -60.7 1205.7 1145.0
White 10 3 2 5 4.0 40.0 -85.0 1205.2 1120.2
Black 11 5 0 6 5.0 45.5 -38.6 1206.2 1167.5
Rapid All 0 0 0 0 0.0 0.0 0.0 0.0 0.0
White 0 0 0 0 0.0 0.0 0.0 0.0 0.0
Black 0 0 0 0 0.0 0.0 0.0 0.0 0.0
Blitz All 0 0 0 0 0.0 0.0 0.0 0.0 0.0
White 0 0 0 0 0.0 0.0 0.0 0.0 0.0
Black 0 0 0 0 0.0 0.0 0.0 0.0 0.0
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 21 8 2 11 9.0 42.9 -60.7 1205.7 1145.0
White 10 3 2 5 4.0 40.0 -85.0 1205.2 1120.2
Black 11 5 0 6 5.0 45.5 -38.6 1206.2 1167.5
Standard All 21 8 2 11 9.0 42.9 -60.7 1205.7 1145.0
White 10 3 2 5 4.0 40.0 -85.0 1205.2 1120.2
Black 11 5 0 6 5.0 45.5 -38.6 1206.2 1167.5
Rapid All 0 0 0 0 0.0 0.0 0.0 0.0 0.0
White 0 0 0 0 0.0 0.0 0.0 0.0 0.0
Black 0 0 0 0 0.0 0.0 0.0 0.0 0.0
Blitz All 0 0 0 0 0.0 0.0 0.0 0.0 0.0
White 0 0 0 0 0.0 0.0 0.0 0.0 0.0
Black 0 0 0 0 0.0 0.0 0.0 0.0 0.0
Top 20 opponents most often played
#Chess SA idNameGamesScoreWinsDrawsLosses%AorDpPerformView
1 1150308424 Collen, L (Luca) 3 1.5 1 1 1 50.0 1196.7 0.0 1196.7 View list
2 1160308427 Lelago, J (Jonathan) 2 2.0 2 0 0 100.0 1190.4 425.0 1615.4 View list
3 1160300148 Malilani, A (Atinatsa David) 2 0.0 0 0 2 0.0 1190.4 -425.0 765.4 View list
4 2150300143 Strydom, M (Mene) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
5 1140151859 Roux, R (Rivan) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
6 2160306025 Rapeane, N (Nokuthula) 1 1.0 1 0 0 100.0 1199.1 425.0 1624.1 View list
7 2150312328 Leshilo, B (Bathabile) 1 1.0 1 0 0 100.0 1209.2 425.0 1634.2 View list
8 2140306018 Botha, L (Lee-Ann Elizabeth) 1 1.0 1 0 0 100.0 1199.1 425.0 1624.1 View list
9 1160300128 Askevold, T (Tertius) 1 0.5 0 1 0 50.0 1200.0 0.0 1200.0 View list
10 1160190423 Zhang, Y (Yufeng) 1 0.0 0 0 1 0.0 1209.2 -425.0 784.2 View list
11 2160162781 Westermann, Z (Zelri) 1 0.0 0 0 1 0.0 1209.2 -425.0 784.2 View list
12 1160158315 Tshoeu, B (Bogosi) 1 0.0 0 0 1 0.0 1199.1 -425.0 774.1 View list
13 1150142014 Myburgh, A (Alex) 1 0.0 0 0 1 0.0 1200.0 -425.0 775.0 View list
14 2130151440 Letsuisa, R (Reabetswe) 1 0.0 0 0 1 0.0 1200.0 -425.0 775.0 View list
15 2140306022 Hauptfleisch, I (Isabella) 1 0.0 0 0 1 0.0 1199.1 -425.0 774.1 View list
16 1150306019 Conradie, L (Lianro Pierre) 1 0.0 0 0 1 0.0 1199.1 -425.0 774.1 View list
17 1150312304 Alene, C (Christian) 1 0.0 0 0 1 0.0 1209.2 -425.0 784.2 View list